J/ApJS/235/20 SZ galaxy clusters from the ACTPol (Hilton+, 2018)
The Atacama Cosmology Telescope: the two-season ACTPol Sunyaev-Zel'dovich
effect selected cluster catalog.
Hilton M., Hasselfield M., Sifon C., Battaglia N., Aiola S., Bharadwaj V.,
Bond J.R., Choi S.K., Crichton D., Datta R., Devlin M.J., Dunkley J.,
Dunner R., Gallardo P.A., Gralla M., Hincks A.D., Ho S.-P.P., Hubmayr J.,
Huffenberger K.M., Hughes J.P., Koopman B.J., Kosowsky A., Louis T.,
Madhavacheril M.S., Marriage T.A., Maurin L., McMahon J., Miyatake H.,
Moodley K., Naess S., Nati F., Newburgh L., Niemack M.D., Oguri M.,
Page L.A., Partridge B., Schmitt B.L., Sievers J., Spergel D.N.,
Staggs S.T., Trac H., van Engelen A., Vavagiakis E.M., Wollack E.J.
<Astrophys. J. Suppl. Ser., 235, 20-20 (2018)>
=2018ApJS..235...20H 2018ApJS..235...20H (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, galaxy; Redshifts; Cross identifications; Radio sources;
Optical
Keywords: cosmology: large-scale structure of universe; cosmology: observations
galaxies: clusters: general
Abstract:
We present a catalog of 182 galaxy clusters detected through the
Sunyaev-Zel'dovich (SZ) effect by the Atacama Cosmology Telescope in a
contiguous 987.5deg2 field. The clusters were detected as SZ
decrements by applying a matched filter to 148GHz maps that combine
the original ACT equatorial survey with data from the first two
observing seasons using the ACTPol receiver. Optical/IR confirmation
and redshift measurements come from a combination of large public
surveys and our own follow-up observations. Where necessary, we
measured photometric redshifts for clusters using a pipeline that
achieves accuracy Δz/(1+z)=0.015 when tested on Sloan Digital
Sky Survey data. Under the assumption that clusters can be described
by the so-called universal pressure profile (UPP) and its associated
mass scaling law, the full signal-to-noise ratio > 4 sample spans the
mass range 1.6<M500cUPP/1014M☉<9.1, with median
M500cUPP=3.1x1014M☉. The sample covers the redshift range
0.1<z<1.4 (median z=0.49), and 28 clusters are new discoveries (median
z=0.80). We compare our catalog with other overlapping cluster samples
selected using the SZ, optical, and X-ray wavelengths. We find that
the ratio of the UPP-based SZ mass to richness-based weak-lensing mass
is <M500cUPP>/<M500cλWL≥0.68±0.11. After applying
this calibration, the mass distribution for clusters with
M500c>4x1014M☉ is consistent with the number of such
clusters found in the South Pole Telescope SZ survey.
Description:
A description of the Atacama Cosmology Telescope (ACT) ACTPol maps
used in this work can be found in Naess+ (2014JCAP...10..007N 2014JCAP...10..007N) and
Louis+ (2017JCAP...06..031L 2017JCAP...06..031L).
ACTPol observed two deep fields on the celestial equator, referred to
as D5 and D6, from 2013 September 11 to 2013 December 14 (Season 13),
using a single 148GHz detector array (PA1). Each of the D5 and D6
fields covers an area of roughly 70deg2. In Season 14
(2014-August-20--December-31), an additional 148GHz detector array
was added to the ACTPol receiver (PA2), and we obtained observations
of a wider, approximately 700deg2 field, referred to as D56, in
which the deeper D5 and D6 fields are embedded.
The ACTPol D56 field also overlaps with the previous ACT survey of the
celestial equator, conducted using the Millimeter Bolometric Array
Camera (MBAC) receiver (Swetz+ 2011ApJS..194...41S 2011ApJS..194...41S) at a frequency of
148GHz. These observations took place during 2009-2010 and covered the
entire 270deg2 SDSS S82 optical survey region.
In this work, we combine the 148GHz observations obtained by ACT
using both the MBAC and ACTPol receivers. The resulting survey area,
which we refer to as the E-D56 field, is shown in Figure 1.
We obtained riz imaging of 24 cluster candidates located within the
ACTPol E-D56 survey area using the SOAR telescope. We used the SOAR
Optical Imager (SOI) for the first observing run, during
2015-October-31--2015-November-2. For the second run, which took place
during 2017 January 5–9, we used the Goodman Spectrograph.
See Section 4.1.1.
We observed seven candidates in the Ks band with the Near-infrared
Camera and Fabry-Perot Spectrometer (NICFPS) at the ARC 3.5m telescope
on 2015-October-2 (0.8" seeing) and 2015-November-23 (1.3" seeing).
See Section 4.1.2.
We obtained spectroscopic redshifts for five clusters with the SALT,
using the Robert Stobie Spectrograph (RSS) in its multi-object
spectroscopy (MOS) mode. The observations were obtained in programs
2015-2-MLT-003 and 2016-1-MLT-008. See Section 4.2.
File Summary:
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FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
catalog.dat 266 182 Clusters detected with S/N>4 in the
ACTPol E-D56 field (Table 1), redshifts (Table 2)
and masses (Table 3)
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Description of file:
E-D56Clusters.fits is the original catalog in FITS format
See also:
VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)
VIII/103 : Herschel Multi-tiered Extragalactic Survey (Oliver+, 2012)
VIII/95 : Herschel Multi-tiered Extragalactic Survey (Oliver+, 2012)
II/359 : The VISTA Hemisphere Survey (VHS) catalog DR4.1 (McMahon+, 2013)
II/367 : The VISTA Hemisphere Survey (VHS) catalog DR5 (McMahon+, 2020)
VIII/91 : Planck Catalog of Compact Sources Release 1 (Planck, 2013)
J/MNRAS/274/75 : z of ROSAT X-ray brightest clusters (Crawford+, 1995)
J/ApJS/129/435 : NORAS galaxy cluster survey. I. (Bohringer+, 2000)
J/AJ/123/1807 : SDSS galaxy clusters redshifts (Goto+, 2002)
J/AJ/128/1017 : Northern Optical Cluster Survey. IV. (Lopes+, 2005)
J/ApJ/660/239 : MaxBCG cat. of galaxy clusters from SDSS (Koester+, 2007)
J/ApJS/183/197 : Galaxy clusters identified from the SDSS-DR6 (Wen+, 2009)
J/ApJS/191/254 : GMBCG galaxy cluster catalog from SDSS DR7 (Hao+, 2010)
J/MNRAS/413/3059 : 4098 galaxy clusters in SDSS Stripe 82 (Geach+, 2011)
J/ApJ/736/21 : Galaxy clusters opt. cat. from AMF on SDSS DR6 (Szabo+ 2011)
J/A+A/534/A109 : MCXC Meta-Catalog X-ray galaxy Clusters (Piffaretti+, 2011)
J/ApJS/199/34 : Clusters of galaxies in SDSS-III (Wen+, 2012)
J/MNRAS/423/1024 : XCS-DR1 Cluster Catalogue (Mehrtens+, 2012)
J/A+A/547/A57 : Swift X-ray Telescope Cluster Survey (Tundo+, 2012)
J/ApJ/763/127 : Galaxy clusters in the SPT survey (Reichardt+, 2013)
J/ApJ/772/25 : Massive SZE clusters observations with ACT (Sifon+, 2013)
J/ApJS/210/22 : Herschel Stripe 82 survey (HerS) first cat. (Viero+, 2014)
J/ApJ/785/104 : redMaPPer. I. Algorithm applied to SDSS DR8 (Rykoff+, 2014)
J/ApJ/794/120 : Sloan Digital Sky Survey coadd. Stripe 82 (Annis+, 2014)
J/MNRAS/444/147 : Richness of galaxy clusters (Oguri, 2014)
J/ApJS/216/27 : Galaxy clusters in the SPT-SZ survey (Bleem+, 2015)
J/ApJS/216/28 : SWXCS III. Clusters with 2005-2012 Swift data (Liu+, 2015)
J/MNRAS/449/4010 : SALT galaxy clusters detected by ACT (Kirk+, 2015)
J/ApJ/807/178 : Newly rich galaxy clusters from SDSS-DR12 (Wen+, 2015)
J/MNRAS/450/3665 : CoMaLit. III. LC2 catalog (Sereno+, 2015)
J/ApJ/819/63 : Hectospec survey of SZ clusters (HeCS-SZ) (Rines+, 2016)
J/ApJS/224/1 : redMaPPer cluster catalog from DES data (Rykoff+, 2016)
J/A+A/594/A27 : Planck Sunyaev-Zeldovich sources (PSZ2) (Planck+, 2016)
J/MNRAS/461/248 : 44 SZ-selected galaxy clusters ACT obs. (Sifon+, 2016)
J/ApJ/843/76 : Cool-core clusters with Chandra obs. (Andrade-Santos+, 2017)
J/MNRAS/469/3738 : Complete sample of galaxy clusters (Schellenberger+, 2017)
J/MNRAS/469/3946 : Abell 370 MUSE redshifts (Lagattuta+, 2017)
J/A+A/609/A84 : VIPERS spectroscopic redshifts (PDR-2) (Scodeggio+, 2018)
J/PASJ/70/S20 : HSC Wide S16A cluster catalog (Oguri+, 2018)
Byte-by-byte Description of file: catalog.dat
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Bytes Format Units Label Explanations
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1- 6 A6 --- --- [ACT-CL]
8- 19 A12 --- ACT-CL ACT-CL cluster name (JHHMM.m+DDMM)
21- 29 F9.5 deg RAdeg ACT SZ detection right ascension (J2000)
31- 38 F8.5 deg DEdeg [-9.1/5] ACT SZ detection declination
(J2000)
40- 44 F5.2 --- SNR [4/24] SZ detection S/N optimized over
all filter scales
46- 50 F5.2 --- SNR2p4 [3.5/24] SZ detection S/N at the 2.4'
filter scale, S/N2.4 (SNR2p4)
52- 55 F4.2 10-4 y0 [0.49/4.5] Cluster central Compton
parameter measured at the 2.4' filter
scale (y0tilde)
57- 60 F4.2 10-4 e_y0 [0.1/0.5] y0 uncertainty (y0tilde_err)
62 I1 --- H13? [0/1] Hasselfield+ 2013JCAP...07..008H 2013JCAP...07..008H
match? (1=match) (H13Match)
64 I1 --- PSZ2? [0/1] Planck Col+ 2016, J/A+A/594/A27
match? (1=match) (PSZ2Match)
66 I1 --- RM? [0/1] RedMaPPer v5.10;
Rykoff+ 2014, J/ApJ/785/104 match?
(1=match) (RMMatch)
68- 96 A29 --- AName Closest match listed on NED
98- 106 F9.5 deg RABdeg BCG right ascension (J2000) (BCG_RADeg)
108- 115 F8.5 deg DEBdeg BCG declination (J2000) (BCG_decDeg)
117- 122 F6.4 --- z [0.1/1.4] "Best" redshift of the cluster
124- 128 F5.3 --- e_z [0.02/0.15]?=0 zphot uncertainty (zErr)
130- 133 A4 --- n_z Note on z: "spec" (147 occurrences) or
"phot" (35 occurrences) (zType)
135- 142 A8 --- r_z Reference on z (zSource) (1)
144- 148 F5.2 --- delSDSS [0.6/21.4]?=0 zCluster density contrast
statistic using SDSS photometry,
δSDSS (deltaSDSS) (2)
150- 153 F4.2 --- e_delSDSS [0.1/3.5]?=0 delSDSS uncertainty
(deltaSDSS_err)
155- 159 F5.2 --- delS82 [1/78]?=0 zCluster density contrast
statistic using S82 photometry,
δS82 (deltaS82) (2)
161- 165 F5.2 --- e_delS82 [0.1/32]?=0 delS82 uncertainty
(deltaS82_err)
167- 171 F5.2 --- delCFHT [0.7/14]?=0 zCluster density contrast
statistic using CFHTLenS photometry,
δCFHT (deltaCFHT) (2)
173- 176 F4.2 --- e_delCFHT [0.04/0.6]?=0 delCFHT uncertainty
(deltaCFHT_err)
178- 182 F5.2 --- delSOAR [2.8/36]?=0 zCluster density contrast
statistic using APO/SOAR photometry,
δSOAR (deltaSOAR) (2)
184- 187 F4.2 --- e_delSOAR [0.5/4]?=0 delSOAR uncertainty
(deltaSOAR_err)
189- 192 F4.2 10+14Msun M500cUPP [1.6/9.1] Mass measured with respect to
the critical density at the cluster
redshift; corrected for the bias due
to the steepness of the halo mass
function (3)
194- 197 F4.2 10+14Msun E_M500cUPP [0.3/1.7] Positive 1-sigma error on
M500cUPP (M500cUPP_errPlus)
199- 202 F4.2 10+14Msun e_M500cUPP [0.2/1.4] Negative 1-sigma error on
M500cUPP (M500cUPP_errMinus)
204- 208 F5.2 10+14Msun M500cUnc [1.8/10.5] Mass measured with respect to
the critical density at the cluster
redshift; uncorrected (3)
210- 213 F4.2 10+14Msun E_M500cUnc [0.39/2.1] Positive 1-sigma error on
M500cUnc (M500cUnc_errPlus)
215- 218 F4.2 10+14Msun e_M500cUnc [0.3/1.7] Negative 1-sigma error on
M500cUnc (M500cUnc_errMinus)
220- 224 F5.2 10+14Msun M200mUPP [2.8/16.1] Mass measured with respect to
the mean density at the cluster
redshift; corrected for the bias due
to the steepness of the halo mass
function (3)(4)
226- 229 F4.2 10+14Msun E_M200mUPP [0.5/3.2] Positive 1-sigma error on
M200mUPP (M200mUPP_errPlus)
231- 234 F4.2 10+14Msun e_M200mUPP [0.4/2.7] Negative 1-sigma error on
M200mUPP (M200mUPP_errMinus)
236- 240 F5.2 10+14Msun M200mUnc [3/18.5] Mass measured with respect to
the mean density at the cluster redshift;
uncorrected (3)
242- 245 F4.2 10+14Msun E_M200mUnc [0.6/4] Positive 1-sigma error on
M200mUnc (M200mUnc_errPlus)
247- 250 F4.2 10+14Msun e_M200mUnc [0.5/3.3] Negative 1-sigma error on
M200mUnc (M200mUnc_errMinus)
252- 256 F5.2 10+14Msun M500cCal [2.4/13.4] M500cUPP rescaled rescaled
by the richness-based weak-lensing mass
calibration factor of 1/0.68
(see Section 6.1) (3)
258- 261 F4.2 10+14Msun E_M500cCal [0.6/3.1] Positive 1-sigma error on
M500cCal (M500cCal_errPlus)
263- 266 F4.2 10+14Msun e_M500cCal [0.5/3] Negative 1-sigma error on
M500cCal (M500cCal_errMinus)
--------------------------------------------------------------------------------
Note (1): Source of the redshift as follows:
SDSS = spectroscopic redshift from SDSS DR13 (see Section 3.2) --this work;
VIPERS = spectroscopic redshift from VIPERS; Scodeggio+ 2018,J/A+A/609/A84
(Section 3.2);
CAMIRA = photometric redshift from Oguri+ 2018, J/PASJ/70/S20 (Section 3.2);
SALT = SALT spectroscopic redshift (Section 4.2) --this work;
S16 = spectroscopic redshift from Sifon+ 2016, J/MNRAS/461/248
M13 = photometric redshift from Menanteau+ 2013ApJ...765...67M 2013ApJ...765...67M
zC = zCluster photometric redshift, from SDSS, S82, CFHTLenS, PS1, and
APO/SOAR data as indicated (Sections 3.1 and 4.1) --this work;
Lit (0) = redshift from Hoag et al. (2015ApJ...813...37H 2015ApJ...813...37H)
Lit (1) = Bohringer et al. (2000, J/ApJS/129/435),
Lit (2) = Piffaretti et al. (2011, J/A+A/534/A109),
Lit (3) = Muzzin et al. (2012ApJ...746..188M 2012ApJ...746..188M),
Lit (4) = Dawson et al. (2009AJ....138.1271D 2009AJ....138.1271D) and
Gilbank et al. (2011AJ....141...94G 2011AJ....141...94G),
Lit (5) = Rykoff et al. (2016, J/ApJS/224/1),
Lit (6) = Valtchanov et al. (2004A&A...423...75V 2004A&A...423...75V),
Lit (7) = Crawford et al. (1995, J/MNRAS/274/75),
Lit (8) = Struble & Rood (1999ApJS..125...35S 1999ApJS..125...35S),
Lit (9) = Gilbank et al. (2008ApJ...677L..89G 2008ApJ...677L..89G)
Note (2): The density contrast statistic (Equation (4)), measured at
the zCluster redshift using the SDSS, S82, CFHTLenS or APO/SOAR
photometric data, and shown where the zCluster photometric redshift
is within |Δz|<0.05 of the redshift listed in column "z".
Note (3): Masses reported here assume that the SZ signal is described by
the UPP and the Arnaud et al. (2010A&A...517A..92A 2010A&A...517A..92A) scaling relation
Refer to Section 2.3 for details.
Note (4): M200mUPP is measured with respect to the mean density at the
cluster redshift and is obtained from M500cUPP through the
concentration-mass relation of Bhattacharya+ (2013ApJ...766...32B 2013ApJ...766...32B),
following Hu & Kravtsov (2003ApJ...584..702H 2003ApJ...584..702H).
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(End) Emmanuelle Perret [CDS] 10-Oct-2023